I tested version v0.4.0-rc1-98-g6c75f52 of OpenOCD for STR912 target.
I tried to erase all the contents of the flash, sectors 0 to 7. Commands:
reset init
flash erase_address 0 0x80000 (or flash erase_sector 0 0 7)
The expected result is:
erased sectors 0 through 7 on flash bank 0 in x.xx0000s
but instead the command returned erase timed out:
erase timed out
failed erasing sectors 0 to 7 (-4)
Here are the last lines of the logs:
Debug: 25605 4184220 arm7_9_common.c:2210 arm7_9_read_memory():
address: 0x00000000, size: 0x00000001, count: 0x00000001
Debug: 25606 4184220 target.c:1527 target_read_u8(): address: 0x00000000,
value: 0x00
Error: 25607 4184220 str9x.c:278 str9x_erase(): erase timed out
Error: 25608 4184230 core.c:48 flash_driver_erase(): failed erasing sectors
0 to 7 (-4)
It worked fine when the process was divided in two: started with the first 7
(0 to 6) sectors and then erased the last one, sector #7 separately.
Using the erase bank command will cause a time out error. Replacing
this with the erase sector bank will provide a slower but safer and
stable method to erase the flash.
Signed-off-by: Laurentiu Cocanu <laurentiu.coc...@zylin.com>
---
src/flash/nor/str9x.c | 18 +++---------------
1 files changed, 3 insertions(+), 15 deletions(-)
diff --git a/src/flash/nor/str9x.c b/src/flash/nor/str9x.c
index bf3f750..d0c1278 100644
--- a/src/flash/nor/str9x.c
+++ b/src/flash/nor/str9x.c
@@ -230,17 +230,9 @@ static int str9x_erase(struct flash_bank *bank, int first,
int last)
return ERROR_TARGET_NOT_HALTED;
}
- /* Check if we erase whole bank */
- if ((first == 0) && (last == (bank->num_sectors - 1)))
- {
- /* Optimize to run erase bank command instead of sector */
- erase_cmd = 0x80;
- }
- else
- {
- /* Erase sector command */
- erase_cmd = 0x20;
- }
+ /*A slower but stable way of erasing*/
+ /* Erase sector command */
+ erase_cmd = 0x20;
for (i = first; i <= last; i++)
{
@@ -296,10 +288,6 @@ static int str9x_erase(struct flash_bank *bank, int first,
int last)
LOG_ERROR("error erasing flash bank, status: 0x%x",
status);
return ERROR_FLASH_OPERATION_FAILED;
}
-
- /* If we ran erase bank command, we are finished */
- if (erase_cmd == 0x80)
- break;
}
for (i = first; i <= last; i++)
--
1.6.0.4
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